Equation 5 · Part 1 · From Origins to Frontier: A History of Frontier AI Model Comparisons
Symbol B
What this part means
modeled as a logistic function of the difference between two scalar ratings.
Its job in the formula
B is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.
Full expression→Symbol B→Article meaning
Where the article explains it
Pairwise votes of this kind are naturally converted into a single continuous rating using a Bradley–Terry-style model — the same functional form used for chess Elo ratings — in which the probability that a rater prefers system A over system B is modeled as a logistic function of the difference between two scalar ratings:
The passage around this formula
…kind are naturally converted into a single continuous rating using a Bradley–Terry-style model — the same functional form used for chess Elo ratings — in which the probability that a rater prefers system A over system B is modeled as a logistic function of the difference between two scalar ratings:
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Sources cited in the surrounding passage
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